text: The beginning of this direction of geochemistry was the work on boron-acid springs in northwestern Persia and Transcaucasia; later these studies were extended to other areas of the USSR. It was found that boron is a typical element in the waters of oil-bearing areas, enriched in them. V.G. Khlopin also for the first time noted the need for prospecting boron-acid compounds in the Embinsky and Gurievsky counties of the Ural region, where much later the Inderskoye field was discovered.